With an IP/netmask pair you can identify the network part and the host part of an IP address.

With an IP/netmask pair you can identify the network part and the host part of an IP address.

• A. Yes
• B. Only the network part
• C. No
• D. Only the host part

Answer: (A)

Subnet masks carve an IP address into network and host portions. The network portion corresponds to the bits set to 1 in the mask, while the host portion corresponds to the bits set to 0. By applying the mask to the IP, you obtain the network address; the remaining bits of the IP give the host identifier within that network. For example, 192.168.1.10 with a 255.255.255.0 mask yields the network 192.168.1.0 and a host part of 10 within that network. Therefore, a single IP/netmask pair lets you identify both parts.

Subnet masks carve an IP address into network and host portions. The network portion corresponds to the bits set to 1 in the mask, while the host portion corresponds to the bits set to 0. By applying the mask to the IP, you obtain the network address; the remaining bits of the IP give the host identifier within that network. For example, 192.168.1.10 with a 255.255.255.0 mask yields the network 192.168.1.0 and a host part of 10 within that network. Therefore, a single IP/netmask pair lets you identify both parts.